(19)
(11) EP 2 405 564 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.04.2015 Bulletin 2015/18

(43) Date of publication A2:
11.01.2012 Bulletin 2012/02

(21) Application number: 11183064.2

(22) Date of filing: 22.01.2004
(51) International Patent Classification (IPC): 
H02J 5/00(2006.01)
H02M 3/335(2006.01)
 H02J 13/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

(30) Priority: 04.02.2003 US 444794 P
20.10.2003 US 689499

(62) Application number of the earlier application in accordance with Art. 76 EPC:
04704453.2 / 1590877

(71) Applicant: Access Business Group International LLC
Ada, Michigan 49355 (US)

(72) Inventor:
  • Baarman, David W.
    Fennville, MI Michigan 49408 (US)

(74) Representative: Boult Wade Tennant 
Verulam Gardens 70 Gray's Inn Road
London WC1X 8BT
London WC1X 8BT (GB)

   


(54) Adaptive inductive power supply


(57) A method for controlling operation of an inductive power supply system comprises establishing an inductive coupling between an inductive power supply and a remote device, the inductive power supply having a controller and a tank circuit; adjusting a resonant frequency of the inductive power supply when the remote device is inductively coupled with the inductive power supply; and adjusting at least one of an operating frequency of the inductive power supply, a duty cycle of the inductive power supply and a rail voltage of the inductive power supply, wherein adjusting the operating frequency of the inductive power supply and adjusting the duty cycle of the inductive power supply each include adjusting a drive circuit with the controller.







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